Yarn guiding block for weaving shuttles



May 10, 1949. W000 2, 70 4 YARN GUIDING'BLOCK FOR wEAvme snuT'r Es Filed Dec. 1, 1948 Ago INVENTOR.

A T TORNEYS- Patented May 10, 1949 f YARN. QUIHINQ nLooK FQRWEAVING HUTTLES 9 Clainis.

This application is a continuation-impart of "'seria1No. v7'1,-

o a weaving shuttle of One of the objects oi this invention is to profionarvyare-gui ty reason of the -"gh tli deliver'y ention is to provide a ""ily threaded and sna pewct Another object of this invention is to prevent rd ehd ofitiie'tunhel from a ain-pennant Another object of this invention is to so shape matter rte" guide 'tlirtfih" wiii'c'iitlie v'am Another object of this invention is to provide 1.a:'-* 2:*, i::,"i;i "ii: "iwrirzrwr and nior particillaily to 3% s l v. (01. 1 39- 223) designated generally I an arrangement accomplishing the above results which will be relatively iree'from the collection of lint which otcursaoout the operation ofadevi e of this character/ 1 i v' o r With these and other objects in view, the invention consists of certain novel featuresof c'onstruction as will be 'more-fu-liy described and par'- ticul-arly 'pointedout infithe appended claims.

In theac'compani ing drawirig's2 If Figure a ing-mental top plan view of a shuttle embodying rthewasrn guiding block which isconstructed in: accordance witnzthe -pres'ent-in-' ention; "zutfpwui? awry-12 (I? a I71"- EZ'; H i

"Figure 2 is a sectional on line 2, 2 of Figure 1 With' the felt omittedf P 4 'i' 1-3: J --'-'Eigu're'3 isa side elevation of the threading m -'11 we 2'. is: "Figure 4 is a sectional view through the thread ing bl'oek arid'a'fragmentai DOYti OHFOf the:sh'utt1je with th fe1t 'dmifit'dy -v' '1 Figure 5" is 'a troh't end. view of the block; Figure G is a perspective view of thethreadinzz block with-" thefelt orfiitted.-"" f Figur'e visa fragmental perspective view of a block withiriction felttli'ereirr. Yr w In proceeding with this'invention, I cast a block for the shuttle in sueh ai s'hape as toprovide a tunnel of asubstantia'l length"xtending longitudii'iallv of the -'b1'odk-=-WitIf*a slot "extending; from the upper 'surface o'f the block "so as to? provide an entrance to 'sai'd tunnel on the opposite side of the tunnel from-said slot-so that wlhen'theyarn isih the turinel 'it icannot*escape upwardly or downwardly, also a' 'g-uide"andi loekin'g -p1" n'=eX tendsacross the slot abdve -thefientranee' passage to th'etunneltopi'event escapeof the'yarn T m'so' iri this tunnel there -is provided as" friction device such as 'flt or" he like which may-haun sert d therein; v a

Ther'isaIsO provided a slot which enters the tunnel frdnif th 'side iof the block and through which the felt orbthef'frietioii devi'ce ofsuch 'enara'ct'er may be' inserted finusmakirrg unnecessary further frictioning means unless desired.

""3With reference" to 'the drawings,'*"l n designates "the chamber eominunicat's *with' a recess IE or pocket for the reception ofa; yarn "guiding block T and shown--iii perspeo- This guiding block I! is usually of cast metal providing a horn l8 and a guard 19 at one end. Below the horn there are two hardened posts 20 and 2| about which the yarn leads as it extends through the delivery eye 22 of the shuttle. The body of the block I? is more closed in and solid than is usually found and there extends lengthwise through this closed in solid portion a tunnel designated 23. This tunnel is generally cylindrical in shape and serves as the guide or directing conduit for the yarn l5 as it extends from the bobbin through the block and out the delivery eye 22.

In order that the yarn may enter the block and pass into this guide tunnel, there is a slot- 24 formed which extends as a continuation of the space between the horn and guard downwardly as at 25, at one side of the tunnel 23 and which may be generally curved if desired the same leading to a point lower than the tunnel as when it connects with a lateral passage 26 extending laterally beneath the tunnel to the side opposite the center of the tunnel at 21.

The slot 24, 25, 26 has smooth, curved edges where the sidewalls may come in contact with the yarn so that the yarn as drawn across this block will enter the block and move downwardly into the tunnel 23. The yarn will find its way beneath the guard l9 and over the end of the horn I8 in a known manner so as to extend about the posts, 20, 2 I as it leaves the shuttle.

In order that a tension on the yarn may be provided, I form a slot 30 extending a portion of the length of the tunnel, as shown in the figures from the side 3| of the block opposite the side in which slot 24 is located inwardly to join the tunnel and I have then inserted a piece of felt or flannel 32 through this slot which may curl and extend back on itself so that the yarn l5 may enter and be engaged on opposite sides by portions of the felt. The yarn thus may enter the tunnel and extend between portions of the felt so as to have friction applied to it as it is drawn through the tunnel.

In some cases, in addition to using a flannel or felt such as shown in Fig. '7, I may use the conventional pads designated generally 35 and 36 located forward of the tunnel so as to apply friction on the yarn. In the showing in Fig. 5 the friction is applied by means of springs 31 on the pads which springs are adjusted as to tension by the threaded members 40. These pads are mounted on a pin 39 in the usual manner.

In order to retain the threading block in place, there is an opening 43 extending laterally through the block which may have a pin 44 passing through holes 45 in the shuttle so as to hold the block in place. The head 46 of the pin is located in a recess 4'! in one side of the shuttle and a nut 48 engages threads of the pin and is located in recess 49 in the other side of the shuttle.

This retaining pin as shown in Fig. 4 is located close to the end 50 of the passage 26 and above this passage so that yarn in the tunnel cannot drop into this passage at the forward end thereof (see Figs. 2 and 4) and yet threading can octhe pads and becoming caught and thus causing abreak.

As shown in Fig. 6, the yarn is so wound on the bobbin 14 that it unwinds counterclockwise as viewed therein, and consequently the slot 24 is formed in such a manner as to receive this counterclockwise whip in a direction to effectively carry it down through the slot during the first pick of the shuttle which is toward the left as Viewed in Figs. 1 and 6. It will be readily apparent that in cases where the bobbin was wound in an opposite direction that the slot in the thread block would be on the opposite side and reversely formed so that the whip from an oppositely wound bobbin would carry the thread into the guide eye as desired.

I claim:

1. A shuttle guide block to be disposed between the end of the bobbin chamber and the tip of the shuttle, said block being a solid one-piece.

structure having a longitudinal yarn entrance slot extending throughout the length of the block from its top surface downwardly, a substantially cylindrical yarn guiding tunnel of uniform diameter also extending longitudinally through a' substantial part of the length of the block but laterally spaced from said slot and a threading passage throughout the length of the tunnel and extending from said slot beneath said tunnel and entering said tunnel on the opposite side of the center thereof from said slot to leave a distinct bottom wall between said tunnel and passage for the length of said substantially cylindrical tunnel.

2. A shuttle guide block as in claim 1 wherein said tunnel is at the bobbin chamber end of the block.

3. A shuttle guide block as in claim 1 wherein said tunnel is at the bobbin chamber end of the block, and opens into said slot which is laterally wider from the end of the tunnel toward the tip end of the shuttle.

4. A shuttle guide block as in claim 1 wherein a guide at a height greater than the height of said passage extends laterally across said block forward of but closely adjacent to the forward end of said passage.

5. A shuttle guide block as in claim 1 wherein a guide at a height greater than the height of said passage extends laterally across said block forward of but closely adjacent to the forward end of said passage said guide being cylindrical.

6. A shuttle guide block as in claim 1 wherein a guide at a height greater than the height of said passage extends laterally across said block forward of but closely adjacent to the forward end of said passage, said guide being a securing pin extending through the block for holding the block in the shuttle.

7. A shuttle guide block as in claim 1 wherein a guide at a height greater than the height of said passage extends laterally across said block forward of but closely adjacent to the forward end of said passage, and friction pads in said slot between said guide and forward end of the block extending vertically to a height greater than said tunnel.

8. A shuttle guide block as in claim 1 wherein a guide at a height greater than the height of said passage extends laterally across said block forward of but closely adjacent to the forward end of said passage, and friction pads in said slot between said guide and forward end of the block extending vertically to a height greater than said tunnel, and pins one on either side of said pad at a height greater than the height of said guide.

9. A shuttle guide block as in claim 1 wherein a. guide at a height greater than the height of said passage extends laterally across said block forward of but closely adjacent to the forward end of said passage, said guide comprising a plurality of laterally extending pins.

SETH WOOD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 795,427 Chadwick July 25, 1905 1,006,801 Snow Oct. 24, 1911 Number Number 15 652,589 

